328432643 has 12 divisors (see below), whose sum is σ = 416787192. Its totient is φ = 255921120.

The previous prime is 328432633. The next prime is 328432649. The reversal of 328432643 is 346234823.

It is a happy number.

It is not a de Polignac number, because 328432643 - 2¹⁴ = 328416259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328432649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 304130 + ... + 305207.

It is an arithmetic number, because the mean of its divisors is an integer number (34732266).

Almost surely, 2^328432643 is an apocalyptic number.

328432643 is a deficient number, since it is larger than the sum of its proper divisors (88354549).

328432643 is a wasteful number, since it uses less digits than its factorization.

328432643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609362 (or 609355 counting only the distinct ones).

The product of its digits is 82944, while the sum is 35.

The square root of 328432643 is about 18122.7106968025. The cubic root of 328432643 is about 689.9465358001.

The spelling of 328432643 in words is "three hundred twenty-eight million, four hundred thirty-two thousand, six hundred forty-three".